12001222011011 has 4 divisors (see below), whose sum is σ = 12415057252800. Its totient is φ = 11587386769224.

The previous prime is 12001222010977. The next prime is 12001222011017. The reversal of 12001222011011 is 11011022210021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12001222011011 - 2¹⁴ = 12001221994627 is a prime.

It is a super-2 number, since 2×12001222011011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001222011017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206917620851 + ... + 206917620908.

It is an arithmetic number, because the mean of its divisors is an integer number (3103764313200).

Almost surely, 2^{12001222011011} is an apocalyptic number.

12001222011011 is a deficient number, since it is larger than the sum of its proper divisors (413835241789).

12001222011011 is an equidigital number, since it uses as much as digits as its factorization.

12001222011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413835241788.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12001222011011 its reverse (11011022210021), we get a palindrome (23012244221032).

The spelling of 12001222011011 in words is "twelve trillion, one billion, two hundred twenty-two million, eleven thousand, eleven".